CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
ASSETS
Cash and cash equivalents	$ 47,971	$ 42,495
Short-term investments	20,343	19,346
Accounts receivable, net	5,398	7,339
Inventories	4,521	5,685
Prepaid expenses and other current assets	2,548	2,500
Total current assets	80,781	77,365
Property and equipment, net	8,355	9,001
Operating lease right-of-use assets	766
Long-term investments	5,322	8,997
Goodwill	7,978	7,978
Intangible assets, net	2,547	2,722
Other assets	162	160
Total assets	105,911	106,223
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	1,138	1,864
Lease liabilities, current	575
Accrued expenses and other liabilities	7,301	6,869
Total current liabilities	9,014	8,733
Income taxes payable	627	622
Lease liabilities, non-current	230
Contingent consideration, non-current	3,793	3,713
Total liabilities	13,664	13,068
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred stock: $0.001 par value authorized: 5,000,000 shares; issued and outstanding: none
Common Stock: $0.001 par value authorized: 150,000,000 shares; issued and outstanding: 23,132,998 and 22,320,156 shares, respectively	23	22
Additional paid-in capital	39,012	33,462
Accumulated other comprehensive income (loss)	17	(37)
Retained earnings	53,195	59,708
Total stockholders' equity	92,247	93,155
Total liabilities and stockholders' equity	$ 105,911	$ 106,223